We have a VBA script in Outlook that generates a popup when sending external emails. Apparently the script's signature expired over the weekend. The person who signed it is no longer here. I see the certificate in the CA on our DC but no option to renew.
I've generated a code signing cert and imported it into my computer but the VBA editor keeps saying
No usable signing certificates are available. I see the cert in my cert store. The template says "Code Signing" instead of original cert "%ORG% Code Signing" if that matters.
I really have no idea what I'm doing and have spent hours digging online and researching to get this far. I'm at a dead end and could use some help getting this signed again. If there is a better more modern alternative to get a user prompt for external recipients let me know.